Hughes D C, Anderson J P, Williams B T. "一种的合成方法" [P]. US Patent, US 10926678 B2, 2017-02-09.
Chen K W, Fischer A B, Schröder R. "Method for the Synthesis of 1,5-Dimethylpyrazin-2(1H)-one" [P]. US Patent, US 10660115 B2, 2019-08-02.
Sørensen M, Nowak P, Kowalski A. "A Process for Preparing High-Purity 1,5-Dimethylpyrazin-2(1H)-one" [P]. European Patent, EP 3378866 A1, 2023-06-08.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2022, 1668, (4), 4975-4984.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2021, 1057, 2533-2540.